X-Rite IFM-O-U Especificaciones Pagina 39

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5 • Formulating a target color
38
OPERATING MANUAL
b. Formulation settings
Check the formulation settings, (
see Section 23.2 “Formulation settings”). Certain inputs
(e.g. ink fi lm thickness) can have a considerable effect on the recipe calculation.
c. Ink Quantity
In the Ink Quantity fi eld, you can enter the desired quantity by overwriting the fi eld or by clicking
on the push button with the arrow symbol to increase or decrease the value indicated. You can
also calculate the ink quantity after formulation to suit your print job (
see Section 5.3
“Calculating the ink quantity”).
d. Use of ink leftovers
If you want to make use of leftovers, acti vate the Use of ink leftovers check box (
see
Chapter 10 “Using ink leftovers”).
5.2.3 Defi ning a target color
General
InkFormulation allows you not only to take proper account of the differing properties of the
substrates for the target color and the recipe, but even to select an assortment for the formulation
which differs in its surface properties from the recipe substrate which is to be printed. However,
to do this the user must give the system the correct information about the substrate properties
during the formulation process.
Below are some examples of possible combinations.
Example 1:
Target color on uncoated paper, recipe on coated paper using an assortment on coated paper.
Example 2:
Target color on uncoated paper, recipe on transparent fi lm using an assortment on transparent
fi lm or on painted Leneta cards.
Example 3:
Target color on uncoated paper, recipe on refl ective metalized fi lm using an assortment on
metalized fi lm or on painted Leneta cards.
In principle, any combination of the following substrates is possible:
• Paper, coated or uncoated or opaque fi lm
• Transparent fi lm
• Metalized fi lm (provided the measurement geometry is Diffus/8°(D8i)).
This considerable fl exibility requires, however, that, for the fi lter settings Pol (for instruments with
measurement geometry 45°/0°) and D8i (for instruments with measurement geometry Diffus/8°),
with certain combinations of substrates InkFormulation has to make some compensation in the
fi lter settings, in order to achieve a good visual match between the target color and the recipe.
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